Study claims COVID-19 immunity lasts for 6 months after first infection
LONDON: People who’ve e had COVID-19 are extremely unlikely to contract it once more for not less than six months after their first an infection, in keeping with a British examine of healthcare staff on the frontline of struggle towards the coronavirus pandemic.
The findings ought to provide some reassurance for the greater than 51 million individuals worldwide who’ve been contaminated with the pandemic illness, researchers on the University of Oxford stated.
“This is really good news, because we can be confident that, at least in the short term, most people who get COVID-19 won’t get it again,” stated David Eyre, a professor at Oxford`s Nuffield Department of Population Health, who co-led the examine.
Isolated instances of re-infection with COVID-19, the illness attributable to the SARS-CoV-2 virus, had raised considerations that immunity could be short-lived and that recovered sufferers could swiftly fall sick once more.
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But the outcomes of this examine, carried out in a cohort of UK healthcare staff – who’re amongst these at highest danger of contracting COVID-19 – recommend instances of reinfection are more likely to stay extraordinarily uncommon.
“Being infected with COVID-19 does offer protection against re-infection for most people for at least six months,” Eyre stated. “We found no new symptomatic infections in any of the participants who had tested positive for antibodies.”
The examine, a part of a significant workers testing programme, lined a 30-week interval between April and November 2020. Its outcomes haven’t peer-reviewed by different scientists however had been revealed earlier than overview on the MedRxiv web site.
During the examine, 89 of 11,052 workers with out antibodies developed a brand new an infection with signs, whereas not one of the 1,246 workers with antibodies developed a symptomatic an infection.
Staff with antibodies had been additionally much less more likely to test positive for COVID-19 with out signs, the researchers stated, with 76 with out antibodies testing positive, in comparison with solely three with antibodies. Those three had been all nicely and didn’t develop COVID-19 signs, they added.
“We will continue to follow this cohort of staff carefully to see how long protection lasts and whether previous infection affects the severity of infection if people do get infected again,” Eyre stated.
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